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Hacking up Honda's ECU
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 Post subject: Ecu P28 board components
PostPosted: Wed Feb 17, 2021 8:59 am 
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Joined: Fri Jun 30, 2017 7:57 am
Posts: 6
Hi everyone can any one help identify
One diode that comes in p28
It doesn't have any letters or numbers
The position of it in the board is D7 it seems similar to another one D11

Please help is very needed the ecu can't work and the car is on the middle of my drive way

Thanks to all in advance


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PostPosted: Wed Feb 17, 2021 6:15 pm 
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Joined: Fri Jun 30, 2017 7:57 am
Posts: 6
By the way the Ecu gives solid cell doesn’t prime the pump and I’m shore I don’t even hear the main relay activating, it’s like it doesn’t has a ecu at all, this afternoon I was able to test with another ecu the same as mine so I was able to move the car out of the driveway and take the certainty it’s the Ecu that has given is soul to the devil


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PostPosted: Mon Jul 26, 2021 1:15 pm 
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Joined: Tue Jul 27, 2004 2:10 am
Posts: 106
Location: SoCal
bsjtdgt wrote:
By the way the Ecu gives solid cell doesn’t prime the pump and I’m shore I don’t even hear the main relay activating, it’s like it doesn’t has a ecu at all, this afternoon I was able to test with another ecu the same as mine so I was able to move the car out of the driveway and take the certainty it’s the Ecu that has given is soul to the devil


yes those Diodes on D11/12 etc are all mostly the same.

Sounds like you have a bad IC17 and/or capacitors in need of replacing. Tho, I'm inclined to say its more of an IC17 issue as it controls an array of functions especially fuel pump activation.


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